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[fif-tee-fif-tee] /ˈfɪf tiˈfɪf ti/
equally good and bad, likely and unlikely, favorable and unfavorable, etc.:
a fifty-fifty chance of winning.
in an evenly or equally divided way:
The board voted fifty-fifty on the merger.
go fifty-fifty (on), to share equally in the cost, responsibility, or profits (of):
We went fifty-fifty on the dinner check.
Origin of fifty-fifty
1910-15, Americanism Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for fifty-fifty
  • In each case, one of the options would be a fifty-fifty bet and the other would be a sure thing.
  • They offered to run the parties for me if we'd split fifty-fifty.
  • He had a fifty-fifty chance of guessing right and, as happens half the time in such cases, was wrong.
  • Brown did not agree with this proposal and thought the compensation structure should remain fifty-fifty.
  • The parties stipulated to joint custody of the two children and a fifty-fifty division of physical placement.
  • He suggested a fifty-fifty partnership with the developers for the cost of this plan.
British Dictionary definitions for fifty-fifty


adjective, adverb
(informal) shared or sharing equally; in equal parts
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Slang definitions & phrases for fifty-fifty



Equally or fairly shared: split the pizza fifty-fifty (1913+)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Idioms and Phrases with fifty-fifty


see under under go halves
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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